Before, it crashed once when I shot voxella and then a second time when I tried it again. Today, I'd already deleted the files off my computer, so I re-downloaded them (the x64 bit version) and oddly enough I didn't have the issue of it crashing.
That is super strange, maybe it breaks when you do something very specific that you just happened to do the first time.
I tried to break it a few times as well since then, but I haven't been able to yet. I did however notice that the credits scene is not playable, it is supposed to be playable like a sandbox exactly like the main menu.
I'm glad that you can play it without any issues now. Thanks for all the help :D